Per Juel Hansen

Per Juel Hansen

Professor


  1. 2024
  2. Published

    Cytotoxicity of Prymnesium parvum extracts and prymnesin analogs on epithelial fish gill cells RTgill‑W1 and the human colon cell line HCEC‑1CT

    Varga, E., Prause, H., Riepl, M., Hochmayr, N., Berk, D., Attakpah, E., Kiss, E., Medic, Nikola, Del Favero, G., Larsen, T. O., Hansen, Per Juel & Marko, D., 2024, In: Archives of Toxicology. 98, p. 999–1014 16 p.

    Research output: Contribution to journalJournal articlepeer-review

  3. Published

    Impact of salinity and temperature on the vital rates of co-occurring Calanus glacialis and C. finmarchicus from West Greenland

    Makri, M., Hansen, Per Juel & Gissel Nielsen, T., 2024, In: Marine Ecology - Progress Series. 729, p. 47-62 16 p.

    Research output: Contribution to journalJournal articlepeer-review

  4. Published

    Long-read genome sequencing provides novel insights into the harmful algal bloom species Prymnesium parvum

    Jian, J., Wu, Z., Silva-núñez, A., Li, X., Zheng, X., Luo, B., Liu, Y., Fang, X., Workman, C. T., Larsen, T. O., Hansen, Per Juel & Sonnenschein, E. C., 2024, In: Science of the Total Environment. 908, 168042.

    Research output: Contribution to journalJournal articlepeer-review

  5. 2023
  6. E-pub ahead of print

    Carbon and nitrogen uptake through photosynthesis and feeding by photosymbiotic Acantharia

    Mansour, J. S., Hansen, Per Juel, Leroux, C. & Not, F., 2023, (E-pub ahead of print) In: Open Research Europe.

    Research output: Contribution to journalJournal articlepeer-review

  7. Published

    Effects of Glacial Flour on Marine Micro-plankton: Evidences from Natural Communities of Greenlandic Fjords and Experimental Studies

    Maselli, Maira, Meire, L., Meire, P. & Hansen, Per Juel, 2023, In: Protist. 174, 1, 17 p., 125928.

    Research output: Contribution to journalJournal articlepeer-review

  8. Published

    FISH-KILLING MARINE ALGAL BLOOMS: Causative Organisms, Ichthyotoxic Mechanisms, Impacts and Mitigation

    Hallegraeff, G., Anderson, D. M., Davidson, K., Gianella , F., Hansen, Per Juel, Iwataki, M., Larsen, T. O., Hegaret, H., Mardones, J. I., MacKenzie, L. & Rensel, J. E., 2023, Unesco. 96 p.

    Research output: Book/ReportReport

  9. Published

    Local adaptation through countergradient selection in northern populations of Skeletonema marinoi

    Sefbom, J., Kremp, A., Hansen, Per Juel, Johannesson, K., Godhe, A. & Rengefors, K., 2023, In: Evolutionary Applications. 16, 2, 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  10. Published

    Microplastic pollution associated with reduced respiration in seagrass (Zostera marina L.) and associated epiphytes

    Molin, J. M., Groth-Andersen, W. E., Hansen, Per Juel, Kühl, Michael & Brodersen, Kasper Elgetti, 2023, In: Frontiers in Marine Science. 10, 14 p., 1216299.

    Research output: Contribution to journalJournal articlepeer-review

  11. Published

    Mixotrophic lifestyle of the ichthyotoxic haptophyte, Prymnesium parvum, offered different sources of phosphorus: [Inkl. Corrigendum]

    Boucher, C., Lacour, T., Julie, A., Damien, R., Hansen, Per Juel & Francis, M., 2023, In: Harmful Algae. 127, p. 1-10 10 p., 102483.

    Research output: Contribution to journalJournal articlepeer-review

  12. Published

    The Mixoplankton Database (MDB): Diversity of photo‐phago‐trophic plankton in form, function, and distribution across the global ocean

    Mitra, A., Caron, D. A., Faure, E., Flynn, K. J., Leles, S. G., Hansen, Per Juel, McManus, G. B., Not, F., Rosario Gomes, H. D., Santoferrara, L. F., Stoecker, D. K. & Tillmann, U., 2023, In: Journal of Eukaryotic Microbiology. 70, 4, 25 p.

    Research output: Contribution to journalJournal articlepeer-review

  13. Published

    The combined effect of pH and dissolved inorganic carbon concentrations on the physiology of plastidic ciliate Mesodinium rubrum and its cryptophyte prey

    Yde Eriksen, C. S., Desmaret Walli, M., Van de Waal, D. B., Helmsing, N. R., Dahl, E. O., Sørensen, Helle & Hansen, Per Juel, 2023, In: Harmful Algae. 129, 11 p., 102509.

    Research output: Contribution to journalJournal articlepeer-review

  14. 2022
  15. Published

    Impacts of inorganic nutrients on the physiology of a mixoplanktonic ciliate and its cryptophyte prey

    Maselli, Maira, Van de Waal, D. B. & Hansen, Per Juel, 2022, In: Oecologia. 199, 1, p. 41-52 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  16. Published

    Multiple ocean stressors: a scientific summary for policy makers

    Beusen, A., Boyd, P. W., Breitburg, D., Comeau, S., Hansen, Per Juel, Isensee, K., Kudela, R. M., Lundholm, Nina, Otto, S., Schwing, F. & Tilbrook, B., 2022, Unesco. 22 p. (IOC Information Series, Vol. 1404).

    Research output: Book/ReportReportpeer-review

  17. Published

    Predator Field and Colony Morphology Determine the Defensive Benefit of Colony Formation in Marine Phytoplankton

    Ryderheim, F., Hansen, Per Juel & Kiørboe, T., 2022, In: Frontiers in Marine Science. 9, 10 p., 829419.

    Research output: Contribution to journalJournal articlepeer-review

  18. Published

    The coupling between irradiance, growth, photosynthesis and prymnesin cell quota and production in two strains of the bloom-forming haptophyte, Prymnesium parvum

    Medic, Nikola, Varga, E., van der Waal, D. B., Larsen, T. O. & Hansen, Per Juel, 2022, In: Harmful Algae. 112, 8 p., 102173.

    Research output: Contribution to journalJournal articlepeer-review

  19. Published

    The strengths and weaknesses of Live Fluorescently Labelled Algae (LFLA) to estimate herbivory in protozooplankton and mixoplankton

    Ferreira, G. D., Figueira, J., Marques, S. C., Hansen, Per Juel & Calbet, A., 2022, In: Marine Environmental Research. 174, 12 p., 105558.

    Research output: Contribution to journalJournal articlepeer-review

  20. 2021
  21. Published

    A guide for field studies and environmental monitoring of mixoplankton populations

    Mitra, A. (ed.), Gypens, N. (ed.), Hansen, Per Juel (ed.) & Flynn, K. J. (ed.), 2021, Zenodo.

    Research output: Book/ReportReport

  22. Published

    An under‑ice bloom of mixotrophic haptophytes in low nutrient and freshwater‑influenced Arctic waters

    Søgaard, D. H., Sorrell, B. K., Sejr, M. K., Andersen, P., Rysgaard, S., Hansen, Per Juel, Skyttä, A., Lemcke, S. & Lund-Hansen, L. C., 2021, In: Scientific Reports. 11, 8 p., 11:2915.

    Research output: Contribution to journalJournal articlepeer-review

  23. Published

    Development and validation of new methods for measuring predation rates in mixoplanktonic protists

    Ferreira, G. D., Calbet, A., Mansour, J. S., Not, F., Medic, Nikola, Hansen, Per Juel, Romano, F., Pitta, P., Flynn, K. J. & Mitra, A., 2021, Novel Approaches For Investigating Marine Planktonic Mixotrophy. Mitra, A., Flynn, K. J., Anestis, K., Mansour, J. S., Ferreira, G. D. & Calbet, A. (eds.). Zenodo, 69 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  24. Published

    Fjords and climate change

    Juul-Pedersen, T., Winding, M. H. S., Sejr, M. K. & Hansen, Per Juel, 2021, Greenland Ecosystem Monitoring Annual Report Cards 2020. Christensen, T. B., Arndal, M. F. & Topp-Jørgensen, E. (eds.). Aarhus University, DCE – Danish Centre for Environment and Energy, p. 8-9 2 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  25. Published

    GEM MarineBasis – Programme description

    Sejr, M. K., Winding, M. H. S., Juul-Pedersen, T., Hansen, Per Juel & Nielsen, T. G., 2021, Greenland Ecosystem Monitoring Annual Report Cards 2020. Christensen, T. R., Arndal, M. F. & Topp-Jørgensen, E. (eds.). Aarhus University, DCE – Danish Centre for Environment and Energy, p. 40-41 2 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  26. Published

    Gill Transcriptomic Responses to Toxin-producing Alga Prymnesium parvum in Rainbow Trout

    Clinton, M., Krol, E., Sepúlveda, D., Andersen, N. R., Brierley, A. S., Ferrier, D. E. K., Hansen, Per Juel, Lorenzen, N. & Martin, S. A. M., 2021, In: Frontiers in Immunology. 12, 17 p., 794593.

    Research output: Contribution to journalJournal articlepeer-review

  27. Published

    HABs under global change: Experimental conditions and approaches

    van der Waal, D. B., Bach, L., Berdalet, E., Brandenburg, K. M., Suikkanen, S., Wohlrab, S., Hansen, Per Juel & Kremp, A., 2021, Guidelines for the study of climate change effects on HABs. Enevoldsen, H. & Sun, Y. (eds.). Unesco, p. 36-63 (IOC Manual and Guides, Vol. 88).

    Research output: Chapter in Book/Report/Conference proceedingReport chapterResearchpeer-review

  28. Published

    Limits to the cellular control of sequestered cryptophyte prey in the marine ciliate Mesodinium rubrum: [incl. correction]

    Altenburger, A., Cai, H., Li, Q., Drumm, Kirstine, Kim, M., Zhu, Y., Garcia-Cuetos, L., Zhan, X., Hansen, Per Juel, John, U., Li, S. & Lundholm, Nina, 2021, In: The ISME Journal. 15, 4, p. 1056-1072 17 p.

    Research output: Contribution to journalJournal articlepeer-review

  29. Published

    Metabolic Reliance on Photosynthesis Depends on Both Irradiance and Prey Availability in the Mixotrophic Ciliate, Strombidium cf. basimorphum

    Hughes, E. A., Maselli, Maira, Sørensen, Helle & Hansen, Per Juel, 2021, In: Frontiers in Microbiology. 12, 12 p., 642600.

    Research output: Contribution to journalJournal articlepeer-review

  30. Published

    Mixoplankton interferences in dilution grazing experiments

    Ferreira, G. D., Romano, F., Medic, Nikola, Pitta, P., Hansen, Per Juel, Flynn, K. J., Mitra, A. & Calbet, A., 2021, In: Scientific Reports. 11, 16 p., 23849.

    Research output: Contribution to journalJournal articlepeer-review

  31. Published

    Physiological Responses of Mesodinium major to Irradiance, Prey Concentration and Prey Starvation

    Drumm, Kirstine, Norlin, A., Kim, M., Altenburger, A. & Hansen, Per Juel, 2021, In: Journal of Eukaryotic Microbiology. 68, 4, 13 p., e12854.

    Research output: Contribution to journalJournal articlepeer-review

  32. Published

    Polyketide synthase genes and molecular trade-offs in the ichthyotoxic species Prymnesium parvum

    Anestis, K., Kohli, G. S., Wohlrab, S., Varga, E., Larsen, T. O., Hansen, Per Juel & John, U., 2021, In: Science of the Total Environment. 795, 10 p., 148878.

    Research output: Contribution to journalJournal articlepeer-review

  33. Published

    Retention of Prey Genetic Material by the Kleptoplastidic Ciliate Strombidium cf. basimorphum

    Maselli, Maira, Anestis, K., Klemm, K., Hansen, Per Juel & John, U., 2021, In: Frontiers in Microbiology. 12, 8 p., 694508.

    Research output: Contribution to journalJournal articlepeer-review

  34. Published

    The loss of mixotrophy in Alexandrium pseudogonyaulax: Implications for trade-offs between toxicity, mucus trap production, and phagotrophy

    Blossom, H. E. & Hansen, Per Juel, 2021, In: Limnology and Oceanography. 66, 2, p. 528-542 15 p.

    Research output: Contribution to journalJournal articlepeer-review

  35. 2020
  36. Published

    A dataset on trophic modes of aquatic protists

    Schneider, L. K., Anestis, K., Mansour, J., Anschütz, A. A., Gypens, N., Hansen, Per Juel, John, U., Klemm, K., Martin, J. L., Medic, Nikola, Not, F. & Stolte, W., 2020, In: Biodiversity Data Journal. 8, 13 p., e56648.

    Research output: Contribution to journalJournal articlepeer-review

  37. Published

    Dimorphism in cryptophytes - The case of Teleaulax amphioxeia/Plagioselmis prolonga and its ecological implications

    Altenburger, A., Blossom, H. E., Garcia-Cuetos, L., Jakobsen, H. H., Carstensen, J., Lundholm, Nina, Hansen, Per Juel, Moestrup, Øjvind & Haraguchi, L., 2020, In: Science Advances. 6, 37, 8 p., eabb1611.

    Research output: Contribution to journalJournal articlepeer-review

  38. Published

    Dynamic CO2 and pH levels in coastal, estuarine, and inland waters: theoretical and observed effects on harmful algal blooms

    Raven, J. A., Gobler, C. J. & Hansen, Per Juel, 2020, In: Harmful Algae. 91, 13 p., 101594.

    Research output: Contribution to journalJournal articlepeer-review

  39. Published

    Ecophysiological traits of mixotrophic Strombidium spp.

    Maselli, Maira, Altenburger, A., Stoecker, D. K. & Hansen, Per Juel, 2020, In: Journal of Plankton Research. 42, 5, p. 485-496 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  40. Published

    Effects of the DSP-toxic dinoflagellate Dinophysis acuta on clearance and respiration rate of the blue mussel, Mytilus edulis

    Nielsen, P., Krock, B., Hansen, Per Juel & Vismann, B., 2020, In: P L o S One. 15, 3, 19 p., e0230176.

    Research output: Contribution to journalJournal articlepeer-review

  41. Published

    Karmitoxin production by Karlodinium armiger and the effects of K. armiger and karmitoxin towards fish

    Binzer, S. B., Varga, E., Andersen, A. J. C., Svenssen, D. K., de Medeiros, L. S., Rasmussen, S. A., Larsen, T. O. & Hansen, Per Juel, 2020, In: Harmful Algae. 99, 13 p., 101905.

    Research output: Contribution to journalJournal articlepeer-review

  42. Published

    Marine Plankton: A Practical Guide to Ecology, Methodology, and Taxonomy. Edited by Claudia Castellani and Martin Edwards. Oxford and New York: Oxford University Press

    Hansen, Per Juel, 2020, In: The Quarterly Review of Biology. 95, 1, p. 76-77 1 p.

    Research output: Contribution to journalLiterature review

  43. Published

    Meteorological conditions induce strong shifts in mixotrophic and heterotrophic flagellate bacterivory over small spatio-temporal scales

    Anderson, R. & Hansen, Per Juel, 2020, In: Limnology and Oceanography. 65, 6, p. 1189–1199 11 p.

    Research output: Contribution to journalJournal articlepeer-review

  44. Published

    Mixotrophy in Dinoflagellates: Prey Selection, Physiology and Ecological Importance

    Hansen, Per Juel & Tillmann, U., 2020, Dinoflagellates: Classification, Evolution, Physiology and Ecological Significance. Durvasula, S. R. V. (ed.). Nova Science Publishers, p. 201-260 60 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  45. Published

    Tang

    Larsen, J. G. & Hansen, Per Juel, 2020, Natur og Museum. Hansen, M. DD. & Bøgh, L. (eds.). 3 ed. Aarhus: Naturhistorisk Museum, Vol. 59. 39 p. (Natur og Museum).

    Research output: Chapter in Book/Report/Conference proceedingBook chapterCommunication

  46. 2019
  47. Published

    In situ and experimental evidence for effects of elevated pH on protistan and metazoan grazers

    Hansen, B. W., Andersen, C. M. B., Hansen, Per Juel, Nielsen, T. G., Vismann, B. & Tiselius, P., 2019, In: Journal of Plankton Research. 41, 3, p. 257–271 15 p.

    Research output: Contribution to journalJournal articlepeer-review

  48. Published

    A-, B- and C-type prymnesins are clade specific compounds and chemotaxonomic markers in Prymnesium parvum

    Binzer, S. B., Svenssen, D. K., Daugbjerg, Niels, Alvez-de-Souza, C., Pinto, E., Hansen, Per Juel, Larsen, T. O. & Varga, E., 2019, In: Harmful Algae. 81, p. 10-17 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  49. Published

    Development of an indirect quantitation method to assess ichthyotoxic B-type prymnesins from Prymnesium parvum

    Svenssen, D. K., Binzer, S. B., Medic, Nikola, Hansen, Per Juel, Larsen, T. O. & Varga, E., 2019, In: Toxins. 11, 5, 15 p., 251.

    Research output: Contribution to journalJournal articlepeer-review

  50. Published

    Distributions of three Alexandrium species and their toxins across a salinity gradient suggest an increasing impact of GDA producing A. pseudogonyaulax in shallow brackish waters of Northern Europe

    Kremp, A., Hansen, Per Juel, Tillmann, U., Savela, H., Suikkanen, S., Voß, D., Barrera, F., Jakobsen, H. H. & Krock, B., 2019, In: Harmful Algae. 87, 14 p., 101622.

    Research output: Contribution to journalJournal articlepeer-review

  51. Published

    Mixotrophic protists and a new paradigm for marine ecology: where does plankton research go now?

    Flynn, K. J., Mitra, A., Anestis, K., Anschütz, A. A., Calbet, A., Ferreira, G. D., Gypens, N., Hansen, P. J., John, U., Martin, J. L., Mansour, J. S., Maselli, M., Medic, N., Norlin, A., Not, F., Pitta, P., Ramano, F., Saiz, E., Schneider, L. K., Stolte, W. & 1 others, Traboni, C., 2019, In: Journal of Plankton Research. 41, 4, p. 375-391 17 p.

    Research output: Contribution to journalJournal articlepeer-review

  52. Published

    Mixotrophy among freshwater and marine protists

    Hansen, Per Juel, Anderson, R., Stoecker, D. K., Decele, J., Altenburger, A., Blossom, H. E., Drumm, Kirstine, Mitra, A. & Flynn, K. J., 2019, Encyclopedia of Microbiology. Schmidt, T. (ed.). 4 ed. Academic Press, p. 199-210

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  53. Published

    Plant are not animals and animals are not plants, right? Wrong! Tiny creatures in the ocean can be both at once

    Glibert, P. M., Mitra, A., Flynn, K. J., Hansen, Per Juel, Jeong, H. J. & Stoecker, D., 2019, In: Frontiers for Young Minds. 7, 9 p., 48.

    Research output: Contribution to journalComment/debate

  54. Published

    Respiratory Physiology of European Plaice (Pleuronectes platessa) Exposed to Prymnesium parvum

    Bergsson, H., Andersen, N. R., Svendsen, Morten B.S., Hansen, Per Juel & Steffensen, John Fleng, 2019, In: Fishes. 4, 2, 13 p., 32.

    Research output: Contribution to journalJournal articlepeer-review

  55. Published

    Sampling bias misrepresents the biogeographical significance of constitutive mixotrophs across global oceans

    Leles, S., Mitra, A., Flynn, K. J., Tillmann, U., Stoecker, D., Jeong, H. J., Burkholder, J., Hansen, Per Juel, Caron, D. A., Glibert, P. M., Hallegraeff, G., Raven, J. A., Sanders, R. W. & Zubkov, M., 2019, In: Global Ecology and Biogeography. 28, 4, p. 418–428 11 p.

    Research output: Contribution to journalJournal articlepeer-review

  56. Published

    The cost of toxicity in microalgae: direct evidence from the dinoflagellate Alexandrium

    Blossom, H. E., Markussen, Bo, Daugbjerg, Niels, Krock, B., Norlin, A. & Hansen, Per Juel, 2019, In: Frontiers in Microbiology. 10, 14 p., 1065.

    Research output: Contribution to journalJournal articlepeer-review

  57. 2018
  58. Published

    The blue mussel Mytilus edulis is vulnerable to the toxic dinoflagellate Karlodinium armiger: adult filtration is inhibited and several life stages killed

    Binzer, S. B., Lundgren, R. B. C., Berge, T., Hansen, Per Juel & Vismann, B., Jun 2018, In: P L o S One. 13, 6, 16 p., e0199306.

    Research output: Contribution to journalJournal articlepeer-review

  59. Published

    Development of a LC-MS/MS method for the quantification of goniodomins A and B and its application to Alexandrium pseudogonyaulax strains and plankton field samples of Danish coastal waters

    Krock, B., Tillmann, U., Wen, Y., Hansen, Per Juel, Larsen, T. O. & Andersen, A. J. C., 2018, In: Toxicon. 155, p. 51-60 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  60. Published

    Effects of harmful algal blooms on fish: insights from Prymnesium parvum

    Svendsen, Morten B.S., Andersen, N. G., Hansen, Per Juel & Steffensen, John Fleng, 2018, In: Fishes. 3, 1, 12 p., 11.

    Research output: Contribution to journalJournal articlepeer-review

  61. Published

    Mixotrophy in chlorophytes and haptophytes: effect of irradiance, macronutrient, micronutrient and vitamin limitation

    Anderson, R., Charvet, S. & Hansen, Per Juel, 2018, In: Frontiers in Microbiology. 9, 13 p., 1704.

    Research output: Contribution to journalJournal articlepeer-review

  62. 2017
  63. Published

    HPLC-HRMS quantification of the ichthyotoxin karmitoxin from Karlodinium armiger

    Andersen, A. J. C., de Medeiros, L. S., Binzer, S. B., Rasmussen, S. A., Hansen, Per Juel, Nielsen, K. F., Jørgensen, K. & Larsen, T. O., Sep 2017, In: Marine Drugs. 15, 9, 13 p., 278.

    Research output: Contribution to journalJournal articlepeer-review

  64. Published

    Oceanic protists with different forms of acquired phototrophy display contrasting biogeographies and abundance

    Leles, S., Mitra, A., Flynn, K. J., Stoecker, D. K., Hansen, Per Juel, Calbet, A., McManus, G. B., Sanders, R. W., Caron, D. A., Not, F., Hallegraeff, G. M., Pitta, P., Raven, J. A., Johnson, M. D., Glibert, P. M. & Våge, S., 16 Aug 2017, In: Proceedings of the Royal Society B: Biological Sciences. 284, 1860, 6 p., 20170664.

    Research output: Contribution to journalJournal articlepeer-review

  65. Published
  66. Published

    Mixotrophic phytoflagellate bacterivory field measurements strongly biased by standard approaches: a case study

    Anderson, R., Jürgens, K. & Hansen, Per Juel, 26 Jul 2017, In: Frontiers in Microbiology. 8, 12 p., 1398.

    Research output: Contribution to journalJournal articlepeer-review

  67. Published

    Evolutionary transition towards permanent chloroplasts? - Division of kleptochloroplasts in starved cells of two species of Dinophysis (Dinophyceae).

    Rusterholz, P. M., Hansen, Per Juel & Daugbjerg, Niels, 11 May 2017, In: PLoS ONE. 12, 5, 16 p., e0177512.

    Research output: Contribution to journalJournal articlepeer-review

  68. Published

    Trophic cascades of bottom-up and top-down forcing on nutrients and plankton in the Kattegat, evaluated by modelling

    Petersen, M. E., Maar, M., Larsen, J., Møller, E. F. & Hansen, Per Juel, May 2017, In: Journal of Marine Systems. 169, p. 25-39 15 p.

    Research output: Contribution to journalJournal articlepeer-review

  69. Published

    Karmitoxin: an amine containing polyhydroxy-polyene toxin from the marine dinoflagellate Karlodinium armiger

    Rasmussen, S. A., Binzer, S. B., Hoeck, C., Meier, S., Soman de Medeiros, L., Andersen, N. G., Place, A., Nielsen, K. F., Hansen, Per Juel & Larsen, T. O., 5 Apr 2017, In: Journal of Natural Products. 80, 5, p. 1287−1293 7 p.

    Research output: Contribution to journalJournal articlepeer-review

  70. Published

    A search for mixotrophy and mucus trap production in Alexandrium spp. and the dynamics of mucus trap formation in Alexandrium pseudogonyaulax

    Blossom, H. E., Bædkel, T. D., Tillmann, U. & Hansen, Per Juel, 4 Apr 2017, In: Harmful Algae. 64, p. 51-62 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  71. Published

    Dynamics of sequestered cryptophyte nuclei in Mesodinium rubrum during starvation and refeeding

    Kim, M., Drumm, Kirstine, Daugbjerg, Niels & Hansen, Per Juel, 21 Mar 2017, In: Frontiers in Microbiology. 8, 14 p., 423.

    Research output: Contribution to journalJournal articlepeer-review

  72. Published

    Mesodinium rubrum: the symbiosis that wasn’t

    Johnson, M. D., Lasek-Nesselquist , E., Moeller, H. V., Altenburger, A., Lundholm, Nina, Kim, M., Drumm, Kirstine, Moestrup, Øjvind & Hansen, Per Juel, 14 Feb 2017, In: Proceedings of the National Academy of Sciences of the United States of America. 114, 7, p. E1040-E1042 3 p.

    Research output: Contribution to journalComment/debatepeer-review

  73. Published

    Distinctly different behavioral responses of a copepod, Temora longicornis, to different strains of toxic dinoflagellates, Alexandrium spp.

    Xu, J., Hansen, Per Juel, Nielsen, L. T., Krock, B., Tillmann, U. & Kiørboe, T., Feb 2017, In: Harmful Algae. 62, p. 1-9 9 p.

    Research output: Contribution to journalJournal articlepeer-review

  74. Published

    Modelling succession of key resource harvesting traits of mixotrophic plankton populations

    Berge, T., Chakraborty, S., Hansen, Per Juel & Andersen, K. H., 15 Jan 2017, In: The ISME Journal. 11, p. 212–223 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  75. Published

    Mixotrophy in the marine plankton

    Stoecker, D. K., Hansen, Per Juel, Caron, D. & Mitra, A., Jan 2017, In: Annual Review of Marine Science. 9, p. 311–335 25 p.

    Research output: Contribution to journalReviewpeer-review

  76. Published

    Det farveløse plankton

    Hansen, Per Juel, 2017, Naturen i Danmark: Havet. Sand-Jensen, K. & Fenchel, T. (eds.). 2 ed. København: Gyldendal, p. 93-125 32 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterCommunication

  77. Published

    Det grønne plankton

    Hansen, Per Juel, 2017, Naturen i Danmark: Havet. Sand-Jensen, K. & Fenchel, T. (eds.). 2 ed. Gyldendal, p. 71-91 21 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterCommunication

  78. Published

    DiskoBasis monitering

    Sigsgaard, Charlotte, Jørgensen, C. J., Christiansen, C. T., Hansen, Per Juel, Christoffersen, Kirsten Seestern, McConnell, A., Mølgaard, K. A., Kroon, Aart, Friborg, Thomas, Hansen, Birger & Elberling, Bo, 2017, Arctic Station Annual Report 2015. Kroon, A. & Sigsgaard, C. (eds.). København: Københavns Universitet, p. 7-13 7 p. (Annual Report).

    Research output: Chapter in Book/Report/Conference proceedingReport chapterResearchpeer-review

  79. Published

    Effects of elevated pH on marine copepods in mass cultivation systems: practical implications

    Hansen, B. W., Hansen, Per Juel, Nielsen, T. G. & Meyer Jepsen, P., 2017, In: Journal of Plankton Research. 39 , 6, p. 984–993 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  80. 2016
  81. Published

    Accumulation, transformation and breakdown of DSP toxins from the toxic dinoflagellate Dinophysis acuta in blue mussels, Mytilus edulis

    Nielsen, L. T., Hansen, Per Juel, Krock, B. & Vismann, B., 2016, In: Toxicon. 117, p. 84-93 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  82. Published

    Chemical diversity, origin, and analysis of phycotoxins

    Rasmussen, S. A., Andersen, A. J. C., Andersen, N. G., Nielsen, K. F., Hansen, Per Juel & Larsen, T. O., 2016, In: Journal of Natural Products. 79, 3, p. 662-673 12 p.

    Research output: Contribution to journalReviewpeer-review

  83. Published

    Chemodiversity of ladder-frame prymnesin polyethers in Prymnesium parvum

    Rasmussen, S. A., Meier, S., Andersen, N. G., Blossom, H. E., Duus, J. Ø., Nielsen, K. F., Hansen, Per Juel & Larsen, T. O., 2016, In: Journal of Natural Products. 79, 9, p. 2250–2256 7 p.

    Research output: Contribution to journalJournal articlepeer-review

  84. Published

    Defining planktonic protist functional groups on mechanisms for energy and nutrient acquisition: incorporation of diverse mixotrophic strategies

    Mitra, A., Flynn, K. J., Tillmann, U., Raven, J. A., Caron, D., Stoecker, D. K., Hansen, P. J., Hallegraeff, G., Sanders, R., Wilken, S., Mcmanus, G., Johnson, M., Pitta, P., Våge, S., Berge, T., Calbet, A., Thingstad, F., Jeong, H. J., Burkholder, J., Glibert, P. M. & 2 others, Granéli, E. & Lundgren, V., 2016, In: Protist. 167, 2, p. 106-120 15 p.

    Research output: Contribution to journalJournal articlepeer-review

  85. Published

    Dynamic cluster analysis: an unbiased method for identifying A + 2 element containing compounds in liquid chromatographic high-resolution time-of-flight mass spectrometric data

    Andersen, A. J. C., Hansen, Per Juel, Jørgensen, K. & Nielsen, K. F., 2016, In: Analytical Chemistry. 88 , 24, p. 12461–12469 9 p.

    Research output: Contribution to journalJournal articlepeer-review

  86. Published

    Functional ecology of aquatic phagotrophic protists–concepts, limitations, and perspectives

    Weisse, T., Anderson, R., Arndt, H., Calbet, A., Hansen, Per Juel & Montagnes, D. J. S., 2016, In: European Journal of Protistology. 55, Part A, p. 50–74 25 p.

    Research output: Contribution to journalJournal articlepeer-review

  87. Published

    Mass entrapment and lysis of Mesodinium rubrum cells in mucus threads observed in cultures with Dinophysis

    Ojamäe, K., Hansen, Per Juel & Lips, I., 2016, In: Harmful Algae. 55, p. 77-84 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  88. Published

    Metabolic and physiological changes in Prymnesium parvum when grown under, and grazing on prey of, variable nitrogen: phosphorus stoichiometry

    Lundgren, V. M., Glibert, P. M., Graneli, E., Vidyarathna, N. K., Fiori, E., Ou, L., Flynn, K. J., Mitra, A., Stoecker, D. K. & Hansen, Per Juel, 2016, In: Harmful Algae. 55, p. 1-12 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  89. Published

    Photoregulation in a kleptochloroplastidic Dinoflagellate, Dinophysis acuta

    Hansen, Per Juel, Ojamäe, K., Berge, T., Trampe, Erik, Nielsen, L. T., Lipps, I. & Kühl, Michael, 2016, In: Frontiers in Microbiology. 7, 11 p., 785.

    Research output: Contribution to journalJournal articlepeer-review

  90. Published

    Role of the chloroplast in the predatory dinoflagellate Karlodinium armiger

    Berge, T. & Hansen, Per Juel, 2016, In: Marine Ecology - Progress Series. 549, p. 41–54 14 p.

    Research output: Contribution to journalJournal articlepeer-review

  91. Published

    Sublethal concentrations of ichthyotoxic alga Prymnesium parvum affect rainbow trout susceptibility to viral haemorrhagic septicaemia virus

    Andersen, N. G., Lorenzen, E., Boutrup, T. S., Hansen, Per Juel & Lorenzen, N., 2016, In: Diseases of Aquatic Organisms. 117, p. 187-195 9 p.

    Research output: Contribution to journalJournal articlepeer-review

  92. 2015
  93. Published
  94. Published

    Effect of acidification on an Arctic phytoplankton community from Disko Bay, West Greenland

    Thoisen, C., Riisgaard, K., Lundholm, Nina, Nielsen, T. G. & Hansen, Per Juel, 2015, In: Marine Ecology - Progress Series. 520, p. 21-34 14 p.

    Research output: Contribution to journalJournal articlepeer-review

  95. Published

    Ichthyotoxicity of the microalga Pseudochattonella farcimen under laboratory and field conditions in Danish waters

    Andersen, N. G., Hansen, Per Juel, Engell-Sørensen, K., Nørremark, L. H., Andersen, P., Lorenzen, E. & Lorenzen, N., 2015, In: Diseases of Aquatic Organisms. 116, 3, p. 165-172 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  96. Published

    Impact of elevated pH on succession in the Arctic spring bloom

    Riisgaard, K., Nielsen, T. G. & Hansen, Per Juel, 2015, In: Marine Ecology - Progress Series. 530, p. 63-75 13 p.

    Research output: Contribution to journalJournal articlepeer-review

  97. Published

    Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession

    Flynn, K. J., Darren, C. R., Mitra, A., Heiner, F., Hansen, Per Juel, Glibert, P., Wheeler, G. L., Stoecker, D. K., Blackford, J. C. & Brownlee, C., 2015, In: Proceedings of the Royal Society B: Biological Sciences. 282, 1804, 6 p.

    Research output: Contribution to journalJournal articlepeer-review

  98. Published

    Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus

    Pančić, M., Hansen, Per Juel, Tammilehto, A. & Lundholm, Nina, 2015, In: Biogeosciences. 12, p. 4235-4244 10 p., 12.

    Research output: Contribution to journalJournal articlepeer-review

  99. 2014
  100. Published

    Prymnesium parvum revisited: relationship between allelopathy, ichthyotoxicity, and chemical profiles in 5 strains

    Blossom, H. E., Rasmussen, S. A., Andersen, N. G., Larsen, T. O., Nielsen, K. F. & Hansen, Per Juel, 2014, In: Aquatic Toxicology. 157, p. 159-166 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  101. Published

    Stability of the intra- and extracellular toxins of Prymnesium parvum using a microalgal bioassay

    Blossom, H. E., Andersen, N. G., Rasmussen, S. A. & Hansen, Per Juel, 2014, In: Harmful Algae. 32, p. 11-21 11 p.

    Research output: Contribution to journalJournal articlepeer-review

  102. Published

    The dinoflagellates Pfiesteria shumwayae and Luciella masanensis cause fish kills in recirculation fish farms in Denmark

    Moestrup, Øjvind, Hansen, Gert, Daugbjerg, Niels, Lundholm, Nina, Overton, J., Vestergård, M., Steenfeldt, S. J., Calado, A. J. & Hansen, Per Juel, 2014, In: Harmful Algae. 32, p. 33-39 7 p.

    Research output: Contribution to journalJournal articlepeer-review

  103. Published

    The role of mixotrophic protists in the biological carbon pump

    Mitra, A., Flynn, K. J., Burkholder, J. M., Berge, T., Calbet, A., Raven, J. A., Graneli, E., Glibert, P. M., Hansen, Per Juel, Stoecker, D. K., Thingstad, F., Tillmann, U., Våge, S. & Zubkov, M. V., 2014, In: Biogeosciences. 11, p. 995-1005 11 p.

    Research output: Contribution to journalJournal articlepeer-review

  104. 2013
  105. Published

    Acquired phototrophy in Mesodinium and Dinophysis – a review of cellular organization, prey selectivity, nutrient uptake and bioenergetics

    Hansen, Per Juel, Nielsen, L. T., Johnson, M., Berge, T. & Flynn, K. J., 2013, In: Harmful Algae. 28, p. 126-139 14 p.

    Research output: Contribution to journalJournal articlepeer-review

  106. Published

    Cutting the canopy to defeat the “selfish gene”; conflicting selection pressures for the integration of phototrophy in mixotrophic protists

    Flynn, K. J. & Hansen, Per Juel, 2013, In: Protist. 164, 6, p. 811-823 13 p.

    Research output: Contribution to journalJournal articlepeer-review

  107. Published

    Loss of phototaxis and degeneration of an eyespot in long-term algal cultures: evidence from ultrastructure and behaviour in the dinoflagellate Kryptoperidinium foliaceum

    Moldrup, M., Moestrup, Øjvind & Hansen, Per Juel, 2013, In: Journal of Eukaryotic Microbiology. 60, 4, p. 327–334 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  108. Published

    Misuse of the phytoplankton-zooplankton dichotomy: the need to assign organisms as mixotrophs within plankton functional types

    Flynn, K. J., Stoecker, D. K., Mitra, A., Raven, J. A., Glibert, P. M., Hansen, Per Juel, Granéli, E. & Burkholder, J. M., 2013, In: Journal of Plankton Research. 35, 1, p. 3-11 9 p.

    Research output: Contribution to journalJournal articlepeer-review

  109. Published

    Production and excretion of okadaic acid, pectenotoxin-2 and a novel dinophysistoxin from the DSP-causing marine dinoflagellate Dinophysis acuta – effects of light, food availability and growth phase

    Nielsen, L. T., Krock, B. & Hansen, Per Juel, 2013, In: Harmful Algae. 23, p. 34-45 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  110. Published

    Using nuclear-encoded LSU and SSU rDNA sequences to identify the Eukaryotic Endosymbiont in Amphisolenia bidentata (Dinophyceae)

    Daugbjerg, Niels, Jensen, M. H. & Hansen, Per Juel, 2013, In: Protist. 164, 3, p. 411-422 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  111. 2012
  112. Published

    Direct evidence for symbiont sequestration in the marine red tide ciliate Mesodinium rubrum

    Hansen, Per Juel, Moldrup, M., Tarangkoon, W., Garcia, L. & Moestrup, Øjvind, 2012, In: Aquatic Microbial Ecology. 66, 1, p. 63-75 13 p.

    Research output: Contribution to journalJournal articlepeer-review

  113. Published

    Effects of experimental seawater acidification on an estuarine plankton community

    Nielsen, L. T., Hallegraeff, G., Wright, S. & Hansen, Per Juel, 2012, In: Aquatic Microbial Ecology. 65, 3, p. 271-285 15 p.

    Research output: Contribution to journalJournal articlepeer-review

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